The court heard Macfie was already a convicted sex offender who had previously served 10 years in prison after two similar series of sexual offences involving girls as young as 12.
The rest sat facing forwards, choosing not to take one last look at the man who devastated their lives.
The court was told Magee, a motor vehicle spare parts "translator", had been the holder of a blue card - a Queensland Government run prevention and monitoring system for people working with children and young people - at the time of his arrest.
Mr Kent said Magee had been involved in training army cadets, but had ceased since being charged by police.
Judge Howie summarised Macfies offending, telling the court he had preyed upon needy and vulnerable girls, and used a fictitious and bizarre story about becoming members of a secret mafia to trick them into performing sexual acts with him.
He said Macfie had bribed the girls with promises of money and gifts including i Phones, cigarettes, fake identification, drugs and alcohol.